Display apparatus and method for making the same

1. A display apparatus comprising: a substrate having wiring lines including at least signal lines arranged in columns, scanning lines arranged in rows, and predetermined power supply lines; and a matrix of pixels, each pixel being disposed at an intersection between a signal line and a scanning line, wherein the wiring lines are formed by patterning a conductor film; each pixel includes active devices and a light-emitting device connected to the wiring lines, operates in response to a control signal supplied from a scanning line, and causes a drive current supplied from a power supply line to flow through the light-emitting device according to a video signal supplied from a signal line; the pixel has an outer region extending linearly along a boundary with an adjacent pixel and an inner region extending along the inner side of the outer region; the wiring lines are arranged across the outer region and the inner region; an outer uneven zone is formed along the outer region and on the substrate due to level differences resulting from the presence of the wiring lines; an inner uneven zone is formed along the inner region and on the substrate also due to level differences resulting from the presence of the wiring lines; and a pattern of the conductor film of which the wiring lines are made is formed properly such that recessed portions of the outer uneven zone are located directly behind their corresponding raised portions of the inner uneven zone, as viewed from inside the pixel.

2. The display apparatus according to claim 1 , wherein the conductor film includes an upper layer and a lower layer; the wiring lines include upper layer lines formed by patterning the upper layer and lower layer lines formed by patterning the lower layer; and a pattern of the lower layer is formed properly such that the recessed portions of the outer uneven zone are located directly behind their corresponding raised portions of the inner uneven zone, as viewed from inside the pixel.

3. The display apparatus according to claim 1 , wherein the pattern of the conductor film is electrically connected to the wiring lines and constitutes part of the wiring lines.

4. The display apparatus according to claim 1 , wherein the pattern of the conductor film includes pads that are electrically isolated from the wiring lines and compensate for level differences resulting from the presence of the wiring lines.

5. A method for making a display apparatus including a substrate having wiring lines including at least signal lines arranged in columns, scanning lines arranged in rows, and predetermined power supply lines; and a matrix of pixels, each pixel being disposed at an intersection between a signal line and a scanning line; wherein the wiring lines are formed by patterning a conductor film; and each pixel includes active devices and a light-emitting device connected to the wiring lines, operates in response to a control signal supplied from a scanning line, and causes a drive current supplied from a power supply line to flow through the light-emitting device according to a video signal supplied from a signal line; the method for making the display apparatus, comprising the steps of: arranging the wiring lines across an outer region and an inner region of the pixel, the outer region extending linearly along a boundary with an adjacent pixel, the inner region extending along the inner side of the outer region; forming properly a pattern of the conductor film of which the wiring lines are made such that recessed portions of an outer uneven zone are located directly behind their corresponding raised portions of an inner uneven zone as viewed from inside the pixel, the outer uneven zone being formed along the outer region and on the substrate due to level differences resulting from the presence of the wiring lines, the inner uneven zone being formed along the inner region and on the substrate also due to level differences resulting from the presence of the wiring lines; forming, along the outer uneven zone and the inner uneven zone, partition walls surrounding the inside area of the pixel; preparing a working base on which films of light-emitting materials that emit light of different colors are deposited at positions corresponding to the respective pixels; placing the working base opposite the substrate, with the working base being in contact with the top of the partition walls; and evaporating the films of light-emitting materials that emit light of different colors onto the respective inside areas of the corresponding pixels, with the inside area of each pixel being surrounded by the partition walls, so as to form a light-emitting layer of the light-emitting device in each pixel.